Q: What are the prime factors of the number 61,406,016?

 A: 2, 3, 7, 61, 107

Why are those the prime factors of the number 61,406,016?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 61,406,016

61,406,016
Factor Arrows
230,703,008
Factor Arrows
215,351,504
Factor Arrows
27,675,752
Factor Arrows
23,837,876
Factor Arrows
21,918,938
Factor Arrows
2959,469
Factor Arrows
3319,823
Factor Arrows
745,689
Factor Arrows
76,527
Factor Arrows
61107

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 61, 107

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 7 x 7 x 61 x 107 = 61,406,016

This can also be written as 26 x 31 x 72 x 611 x 1071 = 61,406,016

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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